Removal of Orange G from aqueous solution by hematite: Isotherm and mass transfer studies

Monoj Kumar Mondal; Sudama Singh; Meka Umareddy; Betty Dasgupta

Korean Journal of Chemical Engineering, Vol.27, No.6, 1811-1815, November, 2010

DOI10.1007/s11814-010-0301-9 Export Citation

Removal of Orange G from aqueous solution by hematite: Isotherm and mass transfer studies

Monoj Kumar Mondal^†, Sudama Singh¹, Meka Umareddy, and Betty Dasgupta

Department of Chemical Engineering & Technology, Institute of Technology, Banaras Hindu University, Varanasi 221005, India
¹Department of Ceramic Engineering, Institute of Technology, Banaras Hindu University, Varanasi 221005, India

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The efficiency of hematite for the removal of Orange G from aqueous solution has been studied at various concentrations as a function of time, temperatures and pH. It was found that the low initial concentration, low temperature and low pH favor the removal process. The maximum adsorption of the dye on hematite has been recorded at 25 mg/l concentration, 303 K temperature and pH 3. The negative values of change in free energy and enthalpy indicate the spontaneous and exothermic nature of the process, respectively. Fixation and immobilization of the dye molecules at the surface of hematite as a result of adsorption are responsible for the negative entropy effect. The effect of pH was described by considering coulombic attraction and aqua complex formation approaches. The applicability of various adsorption isotherms--Langmuir, Freundlich and Jossens--was tested in order to find the most suitable isotherm. The Freundlich isotherm was fitted with the data of the present study.

Keywords:Orange G;Hematite;Adsorption Isotherm;Thermodynamic Parameters;Mass Transfer;Aqueous Solution

[References]

“Biological Stains” 9th Ed. The Williams and Wilkins Co., Baltimore, MD, 121 (1977)
Singh S, Srivastava U, Singh VN, Rupainwar DC, Chem. Environ. Res., 6, 1 (1997)
Herrera F, Lopez A, Mascolo G, Albers E, Kiwi J, Appl. Catal. B: Environ., 29(2), 147 (2001)
Mckay G, Am. Dyestuff Reporter, 69, 38 (1980)
Manjunath DL, Mehrotra I, Indian J. Environ. Health, 23, 309 (1981)
Gupta GS, Prasad G, Pandey KK, Singh VN, Water, Air and Soil Pollut., 37, 13 (1988)
Gupta GS, Prasad G, Singh VN, Environ. Technol. Lett., 9, 153 (1988)
Gupta GS, Prasad G, Singh VN, Water Res., 24, 45 (1990)
Wu RC, Qu HH, He H, Yu YB, Appl. Catal. B: Environ., 48(1), 49 (2004)
Guo H, Stuben D, Berner Z, Appl. Geochemistry, 22, 1039 (2007)
Herrera F, Lopez A, Mascolo G, Albers P, Kiwi J, Water Res., 35, 750 (2001)
Singh DB, Prasad G, Ruapinwar DC, Singh VN, Water, Air and Soil Pollut., 42, 373 (1988)
Mondal MK, Korean J. Chem. Eng., 27(1), 144 (2010)
Singh S, Singh AK, Gupta GS, Tyagi BS, Singh VN, Utilization of natural resources, Wiley Eastern Limited, New Delhi, India (1994)
Biggar JW, Cheung MW, Soil Sci. Soc. Am. Proc., 37, 863 (1973)
Allen SJ, Mckay G, Khader KYH, Environ. Pollut., 52, 39 (1988)
Mckay G, Otterburn MS, Sweeny AG, Water Res., 15, 327 (1981)
Mckay G, Allen SI, Can. J. Chem. Eng., 58, 521 (1980)
Gupta VK, Srivastava SK, Mohan D, Ind. Eng. Chem. Res., 36(6), 2207 (1997)
Khare SK, Srivastava RM, Pandey KK, Singh VN, Environ. Technol. Lett., 9, 1163 (1988)
Mckay G, Allen JS, McConvey IF, Otterburn MS, J. Colloid Interface Sci., 80, 323 (1979)

[1] “Biological Stains” 9th Ed. The Williams and Wilkins Co., Baltimore, MD, 121 (1977)

[2] Singh S, Srivastava U, Singh VN, Rupainwar DC, Chem. Environ. Res., 6, 1 (1997)

[3] Herrera F, Lopez A, Mascolo G, Albers E, Kiwi J, Appl. Catal. B: Environ., 29(2), 147 (2001)

[4] Mckay G, Am. Dyestuff Reporter, 69, 38 (1980)

[5] Manjunath DL, Mehrotra I, Indian J. Environ. Health, 23, 309 (1981)

[6] Gupta GS, Prasad G, Pandey KK, Singh VN, Water, Air and Soil Pollut., 37, 13 (1988)

[7] Gupta GS, Prasad G, Singh VN, Environ. Technol. Lett., 9, 153 (1988)

[8] Gupta GS, Prasad G, Singh VN, Water Res., 24, 45 (1990)

[9] Wu RC, Qu HH, He H, Yu YB, Appl. Catal. B: Environ., 48(1), 49 (2004)

[10] Guo H, Stuben D, Berner Z, Appl. Geochemistry, 22, 1039 (2007)

[11] Herrera F, Lopez A, Mascolo G, Albers P, Kiwi J, Water Res., 35, 750 (2001)

[12] Singh DB, Prasad G, Ruapinwar DC, Singh VN, Water, Air and Soil Pollut., 42, 373 (1988)

[13] Mondal MK, Korean J. Chem. Eng., 27(1), 144 (2010)

[14] Singh S, Singh AK, Gupta GS, Tyagi BS, Singh VN, Utilization of natural resources, Wiley Eastern Limited, New Delhi, India (1994)

[15] Biggar JW, Cheung MW, Soil Sci. Soc. Am. Proc., 37, 863 (1973)

[16] Allen SJ, Mckay G, Khader KYH, Environ. Pollut., 52, 39 (1988)

[17] Mckay G, Otterburn MS, Sweeny AG, Water Res., 15, 327 (1981)

[18] Mckay G, Allen SI, Can. J. Chem. Eng., 58, 521 (1980)

[19] Gupta VK, Srivastava SK, Mohan D, Ind. Eng. Chem. Res., 36(6), 2207 (1997)

[20] Khare SK, Srivastava RM, Pandey KK, Singh VN, Environ. Technol. Lett., 9, 1163 (1988)

[21] Mckay G, Allen JS, McConvey IF, Otterburn MS, J. Colloid Interface Sci., 80, 323 (1979)